Nozzle of vacuum cleaners



Dec. 17, 1929. 5 cARLsTEDT 1,740,001

NOZZLE OF VACUUM CLEANERS Filed April ll, 1927 Patented Dec. 17, 1929 UNITED STATES SVEN MANFRED CARLSTEDT, OF STOCKHOLM, SWEDEN NOZZLE or VACUUM CLEANERS Application filed April 11, 1927, Serial No. 182,900, and in Sweden April 23, 1926.

The vacuum cleaners as commonly used in the homes sufier from the disadvantage that they cannot suck up thread ends and the like from a carpet or the like, or can do so only with difliculty, inasmuch as particles of the said kind have a great tendency to remain sticking to materials similar to that of carpets or the like.

The cause of this is, first, that vacuum cleaners for the purpose in question cannot, for practical and economical reasons, be made with a sucking efiect of unlimited magnitude, and, second, that the nozzle opening should, in order to enable a larger surface to be gone over within a reasonable time, be comparatively large, the consequence of this being that the velocity or the air flowing through said opening, and thus the capability of the vacuum cleaner'to suck up particles of the kind in question, will be rather small.

It is true-that nozzles with smaller sucking openings are generally included in the purchase'of vacuum cleaners, said smaller sucking openings being specially adapted for the cleaning of furniture or the like. but for obvious reasons there can never be the question of effecting a change of nozzles in order to facilitate the removal of a thread end or the like, for example from a larger carpet, while sucking is going on.

. The present invention refers .to nozzles with two'sucking openings of the type set forth, and has for its object to simplify both the construction of the shifting device and.

the manipulation thereof. a

The invention consists substantially in that the sucking pipe of the vacuum cleaner is movably connected with the body of the nozzle, so that the said pipe can be brought 40 into communication with the one or the other of the two sucking openings of the nozzle. The sucking pipe may then be provided, at the end thereof directed toward the body of the nozzle, with a slide having a regulating opening, or, the said end of the sucking pipe may be formed into a slide as set forth. and said slide may be either slidably'or pivotally connected with the bodyof the nozzle, so that by adjusting the slide its regulating opening may be brought to communicate with the oneor the other of two openings provided on the upper side of the body of thenozzle, saidopenings communicating each with one of the sucking, openings of the nozzle.

The accompanying drawing illustrates a few embodiments of an arrangement according to the invention. Fig. 1 is a longitudinal section of the body of the nozzle with the sucking pipe appertaining thereto, and Fig.

2 is an endwise view thereof, looking in the direction of the sucking pipe. Fig. 3 is a similar endwise View of a modified embodiment. 1

In the drawing, 1 designates the body of the nozzle which is'of the usual elongated shape. The body of the nozzle is provided with two sucking openings 2 and 3, the former one of which 2 has a relatively large passage area and is intended for normal use, whereas the. latter opening 3 has amuch 7 smaller passage area and is intended to be used where thread ends or similar particles are to be removed. The openings 2 and 3 communicate each, through separate channels 4 and 5 respectively formed in the body of the nozzle, with one of two openings 6 and 7 provided on the upper side of the body of the nozzle. I

According to the embodiment .shown in Figs. 1 and 2, the openings 6 and-7 are situated behind each other, counted in the transverse direction of the body of the nozzle 1, and formed 'on the body 1 on both sides of said openings are guides '8 for a slide 9 adapted to be moved to and fro. The slide 9 is provided with an opening 10 which in the different extreme positions of the slide is caused to communicate alternately with the openings {5 and 7. Connected to the said slide opening 10 is a sleeve-like projection 11 on the slide, serving as an attachment for the suckmg pipe 12 of a vacuum cleaner of any type. The slidev 9 is provided with laterally proectlng arms. 13/serving as attachments for v the one end of helical springs 14 the other ends of which are connected with studs 15 or the like secured to the body of the nozzle 1. The springs 14 keep the slide 9 with the arms l3 pressed against, abutting studs 16 attached m the body of the nozzle, said studs 16 corresponding to the normal extreme position of the slide 9, in which the slide opening 10 and thus the sucking pipe 12 communicate with the larger nozzle opening 2 through the upper opening (Send the channel 4 in the body of the nozzle. The other position of the slide 9, in which the sucking pipe 12 is in connection with the smaller nozzle opening 3 through the slide opening 10, the opening 7, and the channel 5 in the body of the nozzle, is determined by an abutment 17 formed in the other slide guide 8, said abutment 17 cooperating with a projection or boss 18 at the upper end of the slide.

In the use of the apparatus, the slide 9 with the sucking pipe 12 is normally kept, through the action of the springs 14, in the position shown in Figs. 1 and 2, and cleaning is effected in the usual way through the larger nozzle opening '2. If it is then observed that thread ends or the like particles arenot sucked up through the said larger opening 2, it is only necessary to displace the sucking pipe 12 and the slide 9 into the lower extreme position by a pressure exerted on said sucking pipe 12, in which extreme positionv the smaller nozzle opening 3 is made operative, as mentioned hereinbefore, the sucking action being then more powerful, so that the particles in question are removed. Then it is only necessary to reduce the pressure on the sucking pipe which is then automatically returned, together with the slide, by the springs 14, into the normal position as shown.

The modification illustrated in Fig. 3 substantially differs. from the one above described only by the fact that the openings 6 and 7 on the upper side of the body of the nozzle are situated behind each other, counted in the longitudinal direction of the body of the nozzle, and by the fact that the sucking pipe (not shown) is adapted to be attached to a slide 19 pivotally connected with the body of the nozzle 1, said slide 19 being, the same as slide 9,. provided with a" regulating opening 10 and a sleeve-like projection 11 connected thereto and adapted to receive the sucking pipe. The slide 19 may be swung between two abutments 20 and 21 respectively and is normally kept pressed against the first mentioned abutment 20 by means of a spring 22, in which position the larger nozzle opening 2 is in communication with the sucking pipe through the channel 4 and the opening 6 in the body of the nozzle, as well as through the slide opening 10. By swinging the slide 19 into the other extreme position, fixed by the abutment 21, which is effected by the sucking pipe being turned while" the nozzle is pressed against the support (the carpet), the smaller nozzle opening 3 is connected to' be rendered operative, as before. Returning of the slide 19 into the normal position shown takes place automatically as before, through the medium of the spring 22, when the grasp onthe sucking pipe is loosened.

It is obvious that the pivot for the slide 19 may be disposed in some other place than that shown.

What I claim is 1. In a vacuum cleaner, a nozzle provided with two suction passages of different cross sectional area, a suction pipe, and means movably mounting the suction pipe on the nozzle so that the suction pipe may be selectively moved into communication with either one of said suction passages.

2. In a vacuum cleaner, a nozzle provided with two suction passages of difierent cross sectional areas, an apertured plate movably connected to said nozzle, a suction pipe connected with the aperture in the plate and resilient means between the plate and the nozzle for normally holding the plate so that its aperture registers with one of said passages but permitting the plate to be moved so that its aperture registers with the other of said passages when pressure is exerted on said suction pipe.

3. In a vacuum cleaner, a nozzle provided with two suction passages of different cross sectional areas, an apertured plate mo vably connected to the inner end of the nozzle adapted to traverse said passages so as to communicate with either one or the other, a

suction pipe connected with the aperture in return the plate to its normal position when pressure is released on the suction pipe.

In testimony whereof I afix my signature. SVEN MANFRED CARLSTEDT. 

